Question about 2004 Yamaha XT 660 R

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I had a yosh pipe and had it jetted. i changed it

I had a yosh pipe and had it jetted. i changed the pipe to a graydon proline and it back fires, does it need to be re-jetted?

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May do but try this 1st on carb is a screw turn this in 1/4 of a turn at a time until it stops back firing if it still back fires with it all the way in the jet in there is too big go down a step i had a yosh pipe and had it jetted. i changed it - c09f40d.jpg

Posted on Sep 24, 2009

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